Greisinger-GDH-200-14-Vacuum-Barometer-&-Manometer-Greisinger-GDH-200-14-P-The-Greisinger-GDH-200-14-is-a-Vacuum-Barometer-&-Manometer-that-measures-the-absolute-pressure-of-air-or-non-corrosive-&-non-ionizing-gases-This-small-measuring-device-with-a-4mm-connection-hose-is-ideal-for-non-corrosive-gases-in-large-measuring-areas-P-P-Applications-Measuring-Barometric-Air-Pressure-Overpressure-Measurements-Pneumatics-Tyre-Pressure-&-artificially-created-vacuum-P-P-What-s